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DX11: Preserve w coordinates of lines and points. Fixes glitches when a line is partially behind the camera.

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git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@7357 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
Nolan Check
2011-03-16 03:02:25 +00:00
parent 1ee5e3a0e1
commit aa19fa97d9
2 changed files with 11 additions and 11 deletions
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13
Source/Plugins/Plugin_VideoDX11/Src/LineGeometryShader.cpp
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@ -55,12 +55,9 @@ static const char LINE_GS_COMMON[] =
// Pretend input[0] is on the bottom and input[1] is on top.
// We generate vertices to the left and right.
// Correct w coordinate so screen-space math will work
"VS_OUTPUT l0 = input[0];\n"
"l0.pos /= l0.pos.w;\n"
"VS_OUTPUT r0 = l0;\n"
"VS_OUTPUT l1 = input[1];\n"
"l1.pos /= l1.pos.w;\n"
"VS_OUTPUT r1 = l1;\n"
// GameCube/Wii's line drawing algorithm is a little quirky. It does not
@ -81,16 +78,18 @@ static const char LINE_GS_COMMON[] =
"offset = float2(0, -Params.LineWidth/528);\n"
"}\n"
"l0.pos.xy -= offset;\n"
"r0.pos.xy += offset;\n"
"l1.pos.xy -= offset;\n"
"r1.pos.xy += offset;\n"
"l0.pos.xy -= offset * input[0].pos.w;\n"
"r0.pos.xy += offset * input[0].pos.w;\n"
"l1.pos.xy -= offset * input[1].pos.w;\n"
"r1.pos.xy += offset * input[1].pos.w;\n"
"#ifndef NUM_TEXCOORDS\n"
"#error NUM_TEXCOORDS not defined\n"
"#endif\n"
// Apply TexOffset to all tex coordinates in the vertex
// FIXME: The game may be able to enable TexOffset for some coords and
// disable for others, but where is that information stored?
"#if NUM_TEXCOORDS >= 1\n"
"r0.tex0.x += Params.TexOffset;\n"
"r1.tex0.x += Params.TexOffset;\n"